Tokyo Bourse Updates Indexes Every Millisecond to Lure Traders

The Tokyo Stock Exchange started updating key indexes every millisecond today from every second as it seeks to attract more high-frequency traders.

The Topix index, Topix Core 30 Index and Topix 500 Index will refresh every thousandth of a second, the bourse said in a statement this month.

High-frequency trading programs and other algorithm-based systems account for more than 30 percent of daily trading on the Tokyo exchange, Atsushi Saito, president of the bourse, told reporters at a briefing on Feb. 22.

“We aim to welcome more market players with high-frequency trading with the service,” Saito said at the briefing.